body {
    background-color: #f5f5f5;
}

.form-control{
    display: inline;
    position: absolute;
    /*margin: 0 auto;*/
    left: 320px;
    top: 50%;
    width: auto;
    margin: auto;
    transform: translateY(-50%);
}

.mr-b10 {
    margin-bottom: 10px;
}  
.mr-l10 {
    margin-left: 10px;
}
.pl10 {
    padding-left: 10px;
}



/* 底部样式 */
footer {
    text-align: center;
    padding: 5px 0;
    /* position: fixed;
    bottom: 0;
    width: 100%;
    background-color: #f5f5f5; */
}
footer p, div {
    color: #999;
    padding: 0;
    margin: 0;
    font-size: 12px;
    font-weight: normal;
}